Home / 691,815.40-1,038,500.70-534,740.20

Finding the Fourth Proportional to 691,815.40, 1,038,500.70 and 534,740.20

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Solution

The fourth proportional to 691,815.40, 1,038,500.70 and 534,740.20 is: 802,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,815.40 : 1,038,500.70 = 534,740.20 : x
  2. Step 2: Convert to fraction form
    691,815.40/1,038,500.70 = 534,740.20/x
  3. Step 3: Cross multiply
    691,815.40x = 1,038,500.70 × 534,740.20
  4. Step 4: Simplify right side
    691,815.40x = 555,328,072,018.14
  5. Step 5: Solve for x
    x = 555,328,072,018.14/691,815.40
  6. Step 6: Final answer
    x = 802,711.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.